首页
登录
职称英语
There are about 105 males born for every 100 females, but this【B1】______ dr
There are about 105 males born for every 100 females, but this【B1】______ dr
游客
2023-09-09
46
管理
问题
There are about 105 males born for every 100 females, but this【B1】______ drops to near balance at the age of maturity, and among 70-year olds there are twice as many women as men. But the great universal of male【B2】______ is being changed. Now, boy babies【B3】______ almost as well as girls do. Fifty years ago, the chance of a baby(particularly a boy baby)surviving depended on its weight. A kilogram too light or too heavy【B4】______ almost certain death. Today it makes almost no【B5】______ . Since much of the variation is due to genes, one more agent of evolution has gone.
There is another way to【B6】______ evolutionary suicide: stay alive, but have fewer children. Few people are as【B7】______ as in the past. Nowadays the number of births, like the age of death, has become 【B8】______ .Again,【B9】______ .
For us, this means that evolution is over; the biological Utopia has arrived. Strangely, it has involved little physical change. No other species fills so many places in nature.【B10】______ . We did not evolve, because machines and society did it for us. Darwin had a phrase to describe those ignorant of evolution: they "look at an organic being as a savage looks at a ship, as at something wholly beyond his Comprehension." No doubt we will re- member a 20th century way of life beyond comprehension for its ugliness.【B11】______ . [br] 【B8】
选项
答案
average
解析
本空也应填入一形容词与become构成系表结构。average指“平均的”,本句是说目前出生率和死亡率已经接近了。
转载请注明原文地址:https://tihaiku.com/zcyy/2999471.html
相关试题推荐
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dro
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
Thereareabout105malesbornforevery100females,butthis【B1】______dr
随机试题
Writeanessayofnolessthan200wordsonthetopicgivenbelow.Usetheprope
Thinnerisn’talwaysbetter.Anumberofstudieshaveconcludedthatnormal-
典范rolemodel
[originaltext]PoliceOfficer:Hello.24thPrecinct.OfficerJonesspeaking.Man
TheincreasingAmericanizationofJapaneselifeisevidentinmanyways.One
第一部比较成功的电视多媒体舞蹈是《春江花月夜》()
A.石膏与知母 B.黄芪与茯苓 C.半夏与生姜 D.人参与莱菔子 E.甘
对交叉作业现场应制定完备的交叉作业安全防护措施,必要时设(____)。(A)工作
串补装置正常运行过程中,可控串补装置阀冷却系统()等的仪表指示值应正常。压力$;
某箱形基础底面尺寸为20m×45m,基础底面埋深d=4.5m,地下水位在地面下
最新回复
(
0
)